package org.marsdonne.auth;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.BeanIds;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.annotation.web.configurers.oauth2.server.resource.OAuth2ResourceServerConfigurer;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

import javax.annotation.Resource;
import java.util.List;

@Configuration
@Order(101)
public class WebSecurityConfigurer extends WebSecurityConfigurerAdapter {

    @Configuration
    @ConfigurationProperties("auth.authentication")
    public static class PermitConfigurer {
        private List<String> permitPatterns;

        public List<String> getPermitPatterns() {
            return permitPatterns;
        }

        public void setPermitPatterns(List<String> permitPatterns) {
            this.permitPatterns = permitPatterns;
        }
    }

    @Resource
    private PermitConfigurer permitConfigurer;

    @Resource
    private UserDetailsService userDetailsService;

    @Bean(BeanIds.AUTHENTICATION_MANAGER)
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable()
                .authorizeRequests((requests) -> {
                    if (permitConfigurer.getPermitPatterns() != null)
                        for (String pattern : permitConfigurer.getPermitPatterns()) {
                            requests.antMatchers(pattern).permitAll();
                        }

                    requests.anyRequest().authenticated();
                }
        ).oauth2ResourceServer(OAuth2ResourceServerConfigurer::jwt);
    }
}